片道UIViewControllerTransition

FromViewController.h

#import <UIKit/UIKit.h>

@interface FromViewController : UIViewController


@end

FromViewController.m

#import "FromViewController.h"
#import "ToViewController.h"
#import "TransitionController.h"
#import "MyImageCell.h"

@interface FromViewController () <UICollectionViewDataSource, UICollectionViewDelegate, UINavigationControllerDelegate>

@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;
@property (strong, nonatomic) NSMutableArray *images;

@end

@implementation FromViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.images = [NSMutableArray array];
    for(int i=1; i<=6; i++){
        [self.images addObject:[UIImage imageNamed:[NSString stringWithFormat:@"%d", i]]];
    }
}

#pragma mark - UIViewController LifeCycle

-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    self.navigationController.delegate = self;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

#pragma mark - UIViewController Transition

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([segue.identifier isEqualToString:@"detailImage"]){
        ToViewController *vc = (ToViewController *)[segue destinationViewController];
        NSIndexPath *idx = self.collectionView.indexPathsForSelectedItems[0];
        vc.imageName = [NSString stringWithFormat:@"%d", (int)(idx.row + 1)];
    }
}

- (id <UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController
                                   animationControllerForOperation:(UINavigationControllerOperation)operation
                                                fromViewController:(UIViewController *)fromVC
                                                  toViewController:(UIViewController *)toVC
{
    NSIndexPath *idx = self.collectionView.indexPathsForSelectedItems[0];
    MyImageCell *aCell = (MyImageCell *)[self.collectionView cellForItemAtIndexPath:idx];
    return [[TransitionController alloc] initWithImageView:aCell.imageView];
}

#pragma mark - UICollectionViewDataSource/UICollectionViewDelegate

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return section == 0 ? self.images.count : 0;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath;
{
    MyImageCell *aCell = (MyImageCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath: indexPath];
    aCell.imageView.image = self.images[indexPath.row];
    return aCell;
}

- (CGSize)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
    CGFloat width = self.view.bounds.size.width;
    return CGSizeMake(width/2-10, width/2-10);
}

@end

MyImageCell.h

#import <UIKit/UIKit.h>

@interface MyImageCell : UICollectionViewCell

@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

MyImageCell.m

#import "MyImageCell.h"

@implementation MyImageCell

@end

ToViewController.h

#import <UIKit/UIKit.h>

@interface ToViewController : UIViewController

@property (copy, nonatomic) NSString *imageName;

@end

ToViewController.m

#import "ToViewController.h"

@interface ToViewController ()

@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

@implementation ToViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.imageView.image = [UIImage imageNamed:self.imageName];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    self.navigationController.delegate = nil;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

@end

TransitionController.h

#import <UIKit/UIKit.h>

@interface TransitionController : NSObject <UIViewControllerAnimatedTransitioning>

-(instancetype)initWithImageView:(UIImageView *)imageView;

@end

TransitionController.m

#import "TransitionController.h"

@interface TransitionController () 

@property (strong, nonatomic) UIImageView *imageView;

@end

@implementation TransitionController

-(instancetype)initWithImageView:(UIImageView *)imageView
{
    self = [super init];
    if (self) {
        self.imageView = imageView;
    }
    return self;
}

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5;
}

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
    UIView *fromView = [transitionContext viewForKey:UITransitionContextFromViewKey];
    UIView *toView = [transitionContext viewForKey:UITransitionContextToViewKey];
    
    UIView *containerView = [transitionContext containerView];
    
    CGRect frame = [self.imageView convertRect:self.imageView.bounds toView:containerView];
    UIImageView *movingImageView = [[UIImageView alloc] initWithImage:self.imageView.image];
    movingImageView.frame = frame;
    movingImageView.contentMode = self.imageView.contentMode;
    [containerView addSubview:movingImageView];
    self.imageView.hidden = YES;
    
    // StatusBar And NavigationBar
    CGRect toFrame = toView.frame;
    toFrame.origin.y += 64;
    toFrame.size.height -= 64;
    
    [UIView animateWithDuration:0.5
                     animations:^{
                         fromView.alpha = 0.0;
                         movingImageView.frame = toFrame;
                     } completion:^(BOOL finished) {
                         fromView.alpha = 1.0;
                         self.imageView.hidden = NO;
                         [containerView addSubview:toView];
                         [movingImageView removeFromSuperview];
                         BOOL isComplete = ![transitionContext transitionWasCancelled];
                         [transitionContext completeTransition:isComplete];
                     }
     ];
}

@end